Improvement in churns



D. C. ALDRICH.

Churn.

No. 46,202. Patenied Feb; 7, 1865.

. Y'UNITED STATES PATENT Ori-ICEo DAVID C. ALDRIOH, OF ANAMOSA, IOWA.

MPaovEMENtr N cHuRNs.

Speeifioation forming part of Letters Patent No. 46.202, dated February7, 1865.

To aZl whom, it may concern: Y

Be it known th at I, DAVID U. ALDRICH, of Anamosa, in the cointy ofJones and State f Iowa, have invented a new and Improved Uhurn; and I dohereby declare that the following is a full, clear, and exactdescription thereof, which will enable those skilled in the art to makeand use the same, reference beng had to the aceonpanying drau ings,forining part of this specification, in whish- Figure 1 represents aside view of my in- Vention, partly in section; Fig. 2, a plan or topview of the same.

Similar letters of reference indicate corresponding parts.

This invention relates to a new and improved churn of that classcommonly termed atmospheric; and it consists in the employment or use oftwo dashers, perforated partition-plates, an air-tube, and awater-chamber, all arran ged iu such a manner as to cause butter to berapidly produoed in good condition, and to separate the butter from thebutter-milk, as hereinafter fully set forth.

A represents a box of rectangular form and having an inner lining` ofzinc, a, which forms a chamher, b, all around the cream-receptaele, thebottom of the chamber b having two parallel bridges, c' o, in it toserve as supports. The cream-receptacle is divided into threecompart-ments, d d e, by two vertical partitionplates, B B, which extendthe whole height of the cream-receptacle, the lower edges of the latterresting on the zinc a just over the bridges c c, as shown in Fig'. l.The partitionplates B B, at their lower parts, are perforated with holesf, and each plate has an oblong mortise, g, made in it above theperforations f, as also shown in Fig. 1.

In each compartment d there is placed a dasher, C. These dashers worksnugly in the compartments d, and they are made concave at their undersides, as shown at ax, and inclined at their upper surfaces, down towardthe partition-plates B B, as shown at bx. The dashers are attached tothe lower ends of rods D D, which pass up through the lid E of theehurn, and are connected to alever, F, whichv is attached centrally to arocleshaft, G, the bearings of which are in the upper ends of uprights HH, the latter being at the sides of the box A.

By Operating the lever F it will be seen that the dashers G C will bemade to rise and iall in the eompartments d d.

The eompartment e, between the compartments d d, I term an air-eharnber,and it has a vertical tube, H, fitted in it, said tube forming acommunication between the external air and the lower part of thecompartrnent e, the lower end of the tube H projecting down Within aninch or two of the zinc a, and the upper part passing through the lid E.

I is` a thermometer, which is fitted iu the side of the box A, and hasthe back of its graduated plate in'contaet with the cream i thecompartment e to indicate the temperature thereof.

The cream is brought to the proper temperature'by the introduction ofcold or warn Water in the Chamber b.

During the process of churning, the cream is forced from thecompartments d d into the conpartment c, and vice versa, the underconcave sides of the dashers G C causing air to be forced down into thecream each time a dasher descends, the tube H also admitting air intothe cream in e and causing air to be forced through or incorporated withthe whole mass of cream during the churning operatio'n. The underconcave sides ax of the dashers receive air each time they rise abovethe surface of the cream.

The upper inclined surfaces, bX, of the dashers serve as gatherers, whenthe butter is formed, and each time they rise they deposit the butter inthe compartment e, the butter passing through the mortises g.

The box A has a hole, h, made in it at one side to draw the water fromthe chamber b, and has a hole, t', made in it near its upper end, inorder to supply said compartment with water, said holes being providedwith plugs. The chamber b has also a vent hole at its upper end.

This invention has been practically tested, and it operates well,prodncing butter expeditiously and in good condition.

I do not claim the employment or use of a thermometer with a ehurn, forthat is an old and well-known device; but

I do claim as new and desire to secure by Letters Patent- 1. Thepartition-platesB B, perforated at their lower ends and provided With anohlong opening, g, in connection with the air-tube H in the centraleompartnent, e, and the dashers G O in the compartiments d d, allarranged to 3. The Water-Chamber b, in combination With the perforatedpartit'ion-plates B B, dashoperate substantially as and for the purpofeers O O, air-tube H,and thernoneter I, as and herein set forth.

2. The coneave under surf-aces, ax, of the dashers, in connection withthe upper inelined surfaces, bx, the perforated nartiton plates B lB,and the air-tube H, for the purpose specifor the pnrpose set forth.

DAVID O. ALDRICH.

VVtnesses:

ROBERT DoTT, J D. MCOARN.

